Reflector



W. FLMINUR, P. c. KELLER AND T, WI Hmm REFLECoR. APPLICATION FILED MAR. 15, 1919.

'fm VENTURE,- MLLIAM f" MMDB l JQHJL E. HEL .L ER '2-)UMA W. HULPf-.L

mesma ATTUHNE'Y inname. i

WILLIAM-r. `Minore, AND PHIL c. KELLEn'or CLEVELANB, AND mnoivms'w. RoLPH,

' or SEIBRING, o Hio, Assrenonsrro GENE or NEW YORK.

Specification of Application led March 15,

To all Lv/'tom t may concern:

Be it known that we, WILLIAM F. MINOR and'PHTf- (l. KELLER, citizens of the United States, residing -at Cleveland, county of Cuyahoga, State of Ohio,- and THOMAS W Ronrrna' citizen of the United States', residjingat Sebring,c`ounty of Mahoning, State of Ohio, have invented certain new and user` ful Improvements in Reiectors,. of, wllh ;AVV

the following is a specification.

Our invention relates to reflectlngequip- 4ment for lightsoiirces and more particularly to combinations of glass and metal used 'for reectingequipment. i i

Metal reflectosare used-extensively 1n ind ustrial lighting because of their unbreak-v ableness as well as because they shield thev bright concentrated light sources usually installed in manufact'oriesand such places. Such reflectors usually -direct all of the light into the lower hemisphere and leave" .the ceiling dark or illuminated, only by. light reflected. back from the lower `hc`misphere, which is ordinarily dark colored and of a non-rellecting character. The unilluminated ceilingis in sharp v contrast with the brightly lighted working'plane and this contrast produces eye fatigue in those work-l men whomay have occasion to look up from their work. Besides the 'physiological effect there is an adverseA psychological effect,f caused by the unpleasant vault-like appear! ance of the shop, which is undesirable from the-standpoint of the-employee, Further more, shafting or machinery mounted upon the ceiling is hard to watch if not -illumi-- nated to some extent. Anadditional dis` advantage of the metal reflector is thatwith l' the unlighted ceiling, shadows are sharper because the light cornesl directly' from a bright source. While whole glass reflectors would .light up the ceiling, they are seldom used in industrial plants becauseof breakage and glare.V

Our invention is a novelv combination of glass and metal reflector, `so constructed that light is transmitted to the ceiling while glare from the source is prevented and dangercf breakage minimized. `We accomplish this result by replacing a part or all of the upper metal portionof the usual metal re- Hector with glass which may be transparent but is preferably translucent so as to con- Ceal the inclosed parts and to minimize RAL ELECTRIC COMIPIiNi',` A. CORPORATION answerer.

sity of translucent or diffusing Aglass will give any desired relation between reflected and transmitted light.

In the accompanying drawing, Figure'l4 the upper portion of the ordinary metalreflector has been replaced by a glass eflect- Patented al1-lys, 1920.

glare. Moreover, -the use of the proper den-- Referring to Fig'. l, it will be seen that TE' PATET cFFIcE]- 'ing and transmitting element-1. The elementV l is preferably carried bythree metal Ystraps 2 eachattached at its lower end as by welding to the reflector metal element 3, and at its upper endto a ring l. Thesestraps are preferably twisted inthe middle 4to pre- Vent shadow on the element 1. `The ring 2l is inserted in the heel 5, being attached thereto by means such as screws6. The

shoulder 7 on the lower part of the heel p levents warping "of the. heel during the enameling process and furnishes a 'seat forl fthe vupper edgeofthe glass element 1 as; well as preventing the glass from dropping out should thereflector be inverted. `The flange 8 on the upper end ofthe reector metal element 3 is preferably' provided as'it serves to prevent distortion of the upper end ofthe sl irt,-vdi 1ring the enameling process andV alsoglmpioves the lappearance to a 'certain extent.` n

In the modification shown in Fig. 2 only a part of-what is'ordinarily the upper metal portion is replaced by glass. The straps 2 are provided as in the other case and each ,is attached to the heel and t0 the lower or metal element of the reflectorasbefore. In i this case, .however,the glass rests upon the ylower metalpart ofthe" reflector. The

flange 9 adds strength to the upper edge of the metal element ofthe reflector and prevents direct light from lbeing emitted `be tween the lower end of the glass element andthe metal element of the reflector.

In themodilication shown in F ig. 3, vthe vmetal reflector and lheel are combined with a holder l0. The glass element lljserves as a cover and extendsidown to the top ef the `metal element 3.' In this case, the heel l2 isV supported preferably by thespring fingers 13 of the holder 10. The glass element 11 is preferably'resiliently supported at its uplos 1. A reflector for use with articial light sources comprising a lower metal light reyflecting element, a metal heel spaced from said element, means connecting` said reflecting element and said heel whereby the former is supported through the latter, and a glass transmitting element-covering the space between said metal element and said heel.

2. A reflector for use with artificial light sources comprising a metal heel adapted to be received by a suitable supporting means, a lower metal light reflecting element spaced from and supported by said heel and a glass light transmitting element covering` the space between the said heel and metal element `and carried by them.

3. A reflector' comprising a metal heel adapted to be received by suitable supporting means, a metal light reflecting element disposed below said heeland spaced therefrom, a light transmitting element covering t the space between the saidheel and said refleeting element and means extending from' said heel to said reflecting element and disposed below said lightv transmitting element whereby said reliecting element is supported through said heel.

4. A reflector comprising a metal heel adapted. to be received by suitable supporting means, a metal light reflecting element disposed below said heel and spaced therefrom, a light transmitting element covering the space between the said heel and said reflecting element and straps extending from said reflecting element to said heel and disposed below said light transmitting element whereby said reflecting element is supported through said heel.

5. A reflector comprising a metal heel, a metal reflecting element .disposed below and spaced from said heel, a light transmitting element covering the space between said heel and said reflecting element and means whereby said reflecting element is supported through said heel and independently of said light transmitting element. In Witness whereof, we have hereunto set our hands this twelfth day 'of March, 1919.

hWILLIAM r. MINOR.

PHIL c. KELLER. II-IoMAs w. RoLrII.

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